| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
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| 04/19/2012 | DE202012003018U1 Zweispindelige Schraubenspindelpumpe in zweiflutiger Bauweise Two-Screw pump in twin-scroll design |
| 04/19/2012 | DE19947884B4 Rotationspumpe mit besserer Fluidverschlussstruktur und damit ausgestattete Bremsvorrichtung Rotary pump with improved fluid closure structure and thus equipped braking device |
| 04/19/2012 | DE102010042455A1 Zahnradpumpe zur Förderung einer Flüssigkeit Gear pump for conveying a liquid |
| 04/18/2012 | EP2441915A2 Vane pump |
| 04/18/2012 | CN202194827U 一种矿用泥浆泵安全保护装置 One kind of mining slurry pump safety devices |
| 04/18/2012 | CN202194826U 球塞泵 Ball plunger pump |
| 04/18/2012 | CN202194825U 双模数齿轮泵 Dual modulus gear pump |
| 04/18/2012 | CN202194824U 大排量泵马达一体的供油装置 Large displacement pump motor oil installations integrated |
| 04/18/2012 | CN202194823U 一种齿轮泵 One kind of gear pump |
| 04/18/2012 | CN202194822U 一种五线啮合内压密封新型泵 A five-line within the engaging new pump seal |
| 04/18/2012 | CN202194821U 一种三线啮合内压密封新型泵 A three-line within the engaging new pump seal |
| 04/18/2012 | CN102418696A 一种圆柱形弹簧补偿内外齿轮泵 A cylindrical internal and external gear pump spring compensation |
| 04/18/2012 | CN101644257B 可变容量叶片泵 Variable displacement vane pump |
| 04/17/2012 | US8157553 Scroll compressor having a shifted gravity center |
| 04/17/2012 | US8157551 Scroll compressor with back pressure pocket receiving discharge pressure fluid |
| 04/17/2012 | US8156919 Rotary vane engines with movable rotors, and engine systems comprising same |
| 04/17/2012 | CA2580387C Rotary displacement pump comprising scraper and guide of the scraper |
| 04/17/2012 | CA2580385C Vane pump comprising a two-part stator |
| 04/12/2012 | WO2012045535A2 Internal gear pump |
| 04/12/2012 | WO2012045164A1 Dual outlet pump |
| 04/12/2012 | WO2011053173A3 Rotary working machine provided with an assembly of working chambers with periodically variable volume, in particular a compressor |
| 04/11/2012 | EP2439411A1 Pump assembly, in particular for helicopter lubrication |
| 04/11/2012 | EP2438272A1 Medium transmission unit with circulation blades for the realisation of even medium transmission |
| 04/11/2012 | CN202187914U 复合叶轮式水泵 Composite impeller pumps |
| 04/11/2012 | CN202187913U 一种偏心转子水泵 One kind of eccentric rotor pump |
| 04/11/2012 | CN202187912U 一种电动汽车转向助力泵 An electric power steering pump |
| 04/11/2012 | CN202187911U 新型转子泵 The new rotor pump |
| 04/11/2012 | CN202187910U 一种四线啮合内压密封新型泵 A four-wire inside the engaging new pump seal |
| 04/11/2012 | CN102410214A 中段变量高速限压的三段式压力反馈变排量叶片泵及变排量方法 The middle of the three-stage variable speed pressure limiting pressure feedback variable displacement vane pump and variable displacement method |
| 04/11/2012 | CN102410213A 叶轮泵 Impeller Pumps |
| 04/11/2012 | CN102410212A 一种宝塔形弹簧补偿内外齿轮泵 One kind of compensation and outside the pagoda-shaped spring gear pump |
| 04/11/2012 | CN102410211A 一种环状气囊补偿内外齿轮泵 A cyclic internal and external gear pump balloon compensation |
| 04/11/2012 | CN102410210A 旋转式泵装置 Rotary pump device |
| 04/11/2012 | CN102410209A 流体机械以及在该流体机械中使用的密封部件 The fluid machine, and a sealing member for use in the fluid machine |
| 04/10/2012 | US8152505 Rotary expansible chamber device |
| 04/10/2012 | US8152503 Baffle member for scroll compressors |
| 04/10/2012 | US8152501 Scroll compressor for preventing performance deterioration and variation due to gas leakage |
| 04/10/2012 | US8152500 Scroll compressor build assembly |
| 04/10/2012 | US8152499 Eccentric screw pump |
| 04/10/2012 | CA2661629C Double gear pump |
| 04/05/2012 | WO2012043018A1 Vane pump |
| 04/05/2012 | DE102011017481A1 Pumping device for component, particularly transmission oil pump for transmission, of motor vehicle, has housing part, through which receptacle area is partially defined, and comprising drive element |
| 04/05/2012 | DE102010041995A1 Innenzahnradpumpe Internal gear pump |
| 04/05/2012 | DE102010041990A1 Fuel conveying unit for combustion engine of motor car, has radial inner recess and radial outer recess that are interconnected by channel in push plate, where inner and outer recesses are in fluid connection with outlet of unit |
| 04/05/2012 | DE102010041925A1 Flügelzellenpumpe Vane pump |
| 04/04/2012 | EP2435708A2 Compressor having piston assembly |
| 04/04/2012 | EP2435707A2 Compressor having capacity modulation or fluid injection systems |
| 04/04/2012 | EP2435704A2 Pump, particular vane-type pump |
| 04/04/2012 | EP2018478B1 Stator casing for eccentric worm pumps |
| 04/04/2012 | CN102400913A 一种密封型齿形型线螺杆 A sealed screw-type tooth profile |
| 04/04/2012 | CN102400910A 一种组合式齿轮油泵 A modular gear pumps |
| 04/04/2012 | CN102400909A 偏心螺杆泵 Eccentric screw pump |
| 04/04/2012 | CN102400908A 食品输送用内啮合齿轮泵 Food delivery with internal gear pump |
| 04/04/2012 | CN102400907A 内啮合齿轮泵 Internal gear pump |
| 04/04/2012 | CN102400906A 食品加工用的齿轮泵 Gear pumps used in food processing |
| 04/04/2012 | CN101943162B 一种调压螺杆泵 One kind of regulator screw |
| 04/03/2012 | DE202012100756U1 Selbstangetriebene Zwillingsrotorpumpe Self-propelled twin rotor pump |
| 03/29/2012 | WO2010108487A3 Stator for eccentric screw pumps |
| 03/29/2012 | DE19923851B4 Hydraulische Zahnradmaschine Hydraulic gear machine |
| 03/29/2012 | DE102011005304A1 Pump for conveying fluid to combustion engine in motor vehicle, has stator enclosed completely by sealing sleeve in which functional geometrical structures are formed to position impeller relative to suction and pressure port openings |
| 03/29/2012 | DE102010046591A1 Flügelzellenpumpe Vane pump |
| 03/29/2012 | DE102010041550A1 Pendelschieberzellenpumpe Pendulum slide cell pump |
| 03/29/2012 | DE102010041546A1 Pendelschieberzellenpumpe Pendulum slide cell pump |
| 03/29/2012 | DE102010041244A1 Pumpe mit Elektromotor Pump with electric motor |
| 03/29/2012 | DE102005017834B4 Zellenpumpe Cell pump |
| 03/28/2012 | EP2434158A1 Drive shaft for a positive displacement pump |
| 03/28/2012 | EP2434157A2 Pre-pressurization pump liner for vane pump |
| 03/28/2012 | EP1714036B1 Sealing surfaces between a wavy rotor collar and a displaceable slide of a plump |
| 03/28/2012 | CN202176508U 一种电动汽车助力泵 An electric car booster pump |
| 03/28/2012 | CN202176507U 一种汽车转向助力泵 An automobile steering pump |
| 03/28/2012 | CN102395791A Variable capacity fluidic machine |
| 03/28/2012 | CN102395760A Control of the vanes of a vane machine |
| 03/28/2012 | CN102392818A 齿轮泵 Gear pumps |
| 03/28/2012 | CN102392629A Pressurizing device for ground drive downhole oil-water separation injection-production system in same well |
| 03/28/2012 | CN101984257B Balanced type crescent seal gear pump |
| 03/27/2012 | US8142175 Mounting base and scroll compressor incorporating same |
| 03/27/2012 | CA2562159C Retrievable downhole pumping system |
| 03/22/2012 | WO2012035091A2 Seal for the rotor of rotary piston machines |
| 03/22/2012 | WO2012034592A1 Rotary displacement pump for pumping solids emulsions, especially liquid explosives |
| 03/22/2012 | WO2012034480A1 Synchronal rotary multiphase pump |
| 03/22/2012 | US20120070328 Vane Pump |
| 03/22/2012 | DE102010060708A1 Flügelpumpe Vane pump |
| 03/22/2012 | CA2813228A1 Rotary displacement pump for pumping solids emulsions, especially liquid explosives |
| 03/21/2012 | EP2430313A2 Shaft seal for gear pumps |
| 03/21/2012 | EP2430290A2 Single-vane pump |
| 03/21/2012 | CN202170868U 一种叶片泵 Kind vane pump |
| 03/21/2012 | CN202170867U 流体泵送装置 Fluid pumping means |
| 03/21/2012 | CN101558218B System for sealing the piston of rotary piston machines |
| 03/20/2012 | US8137085 Gear pump with slots in teeth to reduce cavitation |
| 03/20/2012 | US8137084 Interlocking device for holding body and flange of machines using bean-shaped dowels |
| 03/20/2012 | US8136503 Piston valve internal combustion engine |
| 03/15/2012 | WO2012032765A1 Compressor and refrigeration cycle device using same |
| 03/15/2012 | WO2011029847A3 Rotary piston pump |
| 03/15/2012 | DE10257859C5 Schraubenspindelpumpe Screw Pump |
| 03/15/2012 | DE102010040452A1 Verfahren zur Justierung eines Hubrings einer Flügelzellenpumpe Method for adjusting a cam ring of a vane pump |
| 03/15/2012 | DE102010037440A1 Exzenterschneckenpumpe Cavity Pump |
| 03/15/2012 | CA2752460A1 Rotary device |
| 03/14/2012 | EP2428680A2 Eccentric screw pump |
| 03/14/2012 | CN202165266U 大容量搅拌计量泵 Large-capacity stirring metering pumps |
| 03/14/2012 | CN102374164A High efficiency fixed displacement vane pump |